Table 2.
Treatment effects on secondary outcomes.
| Outcome | SMS texting, mean (SD) (n=18) |
Non-SMS texting, mean (SD) (n=21) |
Week 12 | Week 24 | ||||||
|
|
Baseline | Change to week 12a | Change to week 24a | Baseline | Change to week 12a | Change to week 24a | Adj differencea (95% CI) | P | Adj differencea (95% CI) | P |
| Exercise self-efficacy score | 81.94 (18.74) | –6.47 (19.67) | –3.02 (25.52) | 81.55 (17.53) | –9.87 (19.65) | –14.32 (25.51) | –3.39 (–16.21, 9.43) | .60 | –11.31 (–27.95, 5.34) | .18 |
| PA-related energy expenditure (weekly MET-minutes) | 662.29 (497.29) | 383.43 (843.42) | 434.69 (728.69) | 968.71 (1479.10) | 377.43 (842.56) | 171.97 (728.22) | –5.99 (–558.14, 546.15) | .98 | –262.72 (–739.77, 214.33) | .27 |
| Daily sitting time (hours) | 7.28 (3.39) | –0.36 (2.09) | –0.10 (1.90) | 8.52 (2.20) | –1.17 (2.09) | –0.77 (1.89) | –0.81 (–2.19, 0.58) | .25 | –0.67 (–1.92, 0.58) | .29 |
| BMI (kg/m2) | 23.50 (3.47) | 0.23 (0.51) | 0.15 (0.68) | 22.39 (2.81) | 0.32 (0.51) | 0.28 (0.68) | 0.09 (–0.25, 0.42) | .60 | 0.13 (–0.32, 0.58) | .56 |
| Grip strength (kg) | 25.93 (8.70) | 0.32 (2.01) | 1.44 (2.55) | 25.51 (6.34) | 0.31 (2.01) | 1.09 (2.55) | 0.02 (–1.32, 1.29) | .98 | –0.34 (–2.01, 1.32) | .68 |
| Lower body strength (repetitions in 30-sec chair-stand test) | 13.44 (3.42) | 2.21 (3.40) | 3.55 (2.80) | 14.90 (3.81) | 2.77 (3.39) | 3.43 (2.79) | 0.56 (–1.67, 2.80) | .61 | –0.12 (–1.96, 1.72) | .90 |
a Adjusted for baseline.